Truck



' r Dec. 13,

M. P. HOLMES TRUCK Filed March 22, 1924 Patented Dec. 13, 1927.

' UNITED STATES,

, 1,652,528 PATENT. OFFICE.

MORRIS P. HOLMES, OF'CLABEMONT, NEW HAMPSHIRE, ASSIGNOVRY r0 SULLIVAN MACHINERY COMPANY, A CORPORATION OF MASSACHUSETTS.

' 'rnucx.

My invention relates to trucks and more especially to mining machine trucks. 7 An object of my invention is to provide an improvedmeans whereby a mining machine may be moved about a mine, the particular end to be attained being the provision of improved means whereby the machine may be transported up ordown the sharp grades or pitches so often encountered in mine tracks; and the provision of means adapted v for this purpose of a type in which the mechanism is of such a'nature that in theevent of breakage of the drive, the sudden release of the machine may be prevented.

More specifically, an object of my invention is to provide a supplemental propulsion mechanism for a mining machine truck'of.

a type which may be drivenfrom the usual propulsion mechanism for the truck. and which is provided with automatic mechanism of a type for preventing unintended rearward rotation thereof but'which can nevertheless be permitted to rotate rearwardly if desired. These and other objects of my invention will hereinafter more fully appear. 7

In the accon'1panyi-ng drawings I have shown for purposes ofillustration one form which my invention may'assume inipractice. I

In these drawings,- 7 Fig. 1 is a view in side elevation of a mining machine truck'supporting amining designated 1. The truck 1 carries upon the upper portion 2 thereof a miningmachine 3 of'usual form. v The truck is supported by the truck wheels 4 and .5, and the latter are connected together for' simultaneous rotaetchain 6 cooperatingwith sprocket wheels. (not shown) onthe 'axles which support the wheels .4 and 5. The-wheel ibis adapted to tion by aflexible connectiomherein a sprockbe propelled byiasprocket chain connection 8; driven from a sprocketpfon' the trans= ,cludingthe lever 35 vided. 0'

j Application filed March 22, 1924. Serial No. 701,222.

verse shaft '10 carried by the' truck and adapted to fbepropelled-in a well known manneriby the mining machine. The propulsion of the shaft 10 by the mining machine is so. controlled that this shaft may be either positively driven or may be totally' disconnected from the mining machine with the result that when the latter condition obtains, the sprocket 9 will be entirely free to rotate. The truck carries an electric cable reel llrwhich may be driven if de-c sired whether the sprocket 9 is rotated or not. 'The truck carries a tiltablemachine supporting frame 12-pi-voted at 13 for tilting during loading or unloading of a machine, upon which the machine rests. Arranged adjacent the forward end of the body of the truck and beneath tilting frame 12 is a reel member 15v keyed as at 16 on the shaft 17 which extends transversely and is journaled insuitable brackets 18. The shaft 17 carries a sprocket 19 of such size that it may be driven by a chain 20 and sprocket 20 upon the forward axle of the truck at such a rate that itsiperipheral or winding speed will be equal to the peripheral speed 10f the'truck wheels; 1T0 permit disconnection of thesprocket from the shaft when desired ausual toothed-clutch 21 is provided. It will be observed that journaled upon the shaft 17 is a sleeve member 23 which carries a braking surface 24 with which a brake band 25 adapted to be actuated by a suitable leverage 26 under the control of ,a,

-manually operable rod 27 is arranged. It will be noted that the. right hand end flange 28 of the drum 15'is provided upon its innerperiphery with a series of ratchet 'teeth- 29 and these are adapted to cooperate with pawls 30 carried by apawl carrier 31 keyed as at '32 to the member 23. Suitable spring pushed pins 34 normally maintain the pawls in engagement with the teeth of i the ratchet. It willbe apparent when the arrangement of the parts is noted that the ratchet slipping over the pawls but that reverse movementof thedrum will be impossible unless the brake band 25 is sufficiently released to permit rotation of the element-23'. A suitable, manual control inand segment 36 is prorthe rod 27 L From this descrlption the mode cf opera tion can readily be understa ed; Let itbe drum may wind in with the teeth of the.

by Letters Patent is assumed that a flexible member herein a cable 38 is suitabb secured to the drum l5 and that the mining machine truck is at the bottom ol :1 bill which is to the right of the end of the trucltwai' shown in Fig. 1 and that it is desired to employ the auxiliary mechanism in moving); the machine up the bill. It will be evident that with the truck Wheels rotating in a clockwise direc' tion the truck will be propelled by thcni toward the top oi the hill and it will be further evident that the drum will be similarly rotated it the clutch 21 is connected. As a result the drum will wind in the cable 38 and will aid in pulling the machine up the hill. Ihn'in this winding; operation of thedrmn the ratchet teeth wil slip over the pawls and the drum will be freely rotutable. Suppose, luntcveixthat any o'l' the drivingconnections fol-the truck Wheels or for the drum were to break. It will then be evident that it the bralte band 25 is in tight engagement with the surface 2 L no unwinding of the rope will be possible, for as soon as any tendencji to unwind manifested the pawls will immediately check it. If it is desired to letthe machinedown a hill that is too steep for the wheels to sa'lely be counted upon to retard truck movmnent, it willbe evident that the sprocket 9 may be. it desired, disconnected from dri'x 'ing relation with the motor, or the clutch Q1 disconnected, the cable 38 connected at the top of the hill and by controlling the mechanism Blithe cable can be gradually allowed to pay out, the brake l and slipping as the machine moves down the hill. The rope may be ound in different directions; depending on what diretction the trnclt is to more in descending, the hill. ltloreowlr, if desired, by lashing; the cableto the drum the reel may be used as the regular brake tor the truck, by having the clutch :21 connccted, in so far as runningin one direction is concerned. A brake cooperating directly with the truck Wheels may, however, be provided as usual. 7

While I have in this application spccili rally described one form which my invention may assume in practice, it will be understood that this form of the same is shown "for pnrposesot illustration and that the invention may be modified and embodied in various other terms Without departing from its spirit or the scope of" the appended claims. t i

hat I claimai-i new and desire to secure 1. In a trucls, a truck llrm'ne adapted to snpoort a mining machine having a motor, true: propulsion mechanism thereon ulapted to be driven by said mining machine motor and including running gear and driving mechanismtherefor, a Winding member on said truck frame, a flexible member adapted to be wom'ld on said member,driving connections between said truck propulsion mechanism and said winding nntmiber, and ratchet mechanismautomatically lpcra live to prevent payiiig out of said flexible member including: relatively movable ratchct and pawl elements one of which stationary during: windin x .3. In a truck, a truck frame adapted to support a mining, machine having' a motor, truck propnlsion mechanism thereon adapted to llfiflllvfill by said mining machine motor and including running" gear and driving mechanisi'n thcrelona Winding men'iber on said trncl; 'lramc, a flexible member adapted to be Wound one-aid member, driv lug; connections between said runninggear and said Winding member, and ratchet mechanism aautomatically operative to prcvent paying out oi said flexible member including; relatively nmvablc ratchet and pawl elements one o'l which stationary during windin '3. In a truck, a truck itrameltrnck propulsion mechanism thereon including, running gear and driving; mechanism theretor, a Winding, member on said truck frame, a tlexible member adapted to be Wound on eaid member, (.lriving connections betweeir said truck propulsion mechanism and said winding" member, and brake controlled ratchet mechanism automaticall operatii e to prevent paying out of said flexible member. it it i l l at. In a truck, a truck frame, truck propnlsion mechanism thereon including running gear and driving mechanism therefor, a winding member on said truck frame, a flexible member adapted to be wound on said member, driving connections between said rnm'iing gear and said winding: mem- 381', and brake controlled ratchet inechanism automaticzilly ioperative to prevent paying out of said flexible fmen'iber hut releasable to permit controlled paying out thereof. 1 i l i 5. In a mining machine truck, a truck frame adapted to support a mining machine,

running gear, means for propelling thelatter. and means beneath said frame at the forward side of said running,' gear and dr.iv en by the latter for winding in a flexible member to cooperatein the moving of said truck. i

6. In a mining machine truck, a truck frantic having a tilting portion adaptedto support a1 mining machine, running, gear,

means for propelling the latter, and means beneath saidlrame at the forwardside of said running gear for Winding in a flexiblc member to cooperate inthe moving of said trucln l i 7. In combination wit-bra truck having primary propulsion mechanism, auxiliaryv truck moving means including a reel, a reel ill) til

driving shaft, driving means for said reel driving shaft, a ratchet wheel coaxial with said drum, a pawl carrier coaxial with said drum carrying pawls cooperating with sald ratchet wheel, means for braking the rota-- tion of one of said two last mentioned elements, and an operating connection between the other and said drum. 7

8. In combination with a truck having primary propulsion mechanism, auxiliary truck moving means including a reel, a reel driving'shaft, driving means for said reel driv-. mg shaft, a ratchet, wheelca-rried by said drum, a pawl carrier coaxial therewith and carrying pawls cooperating with said ratchet tion of said pawl carrier.

9. I11 combination wlth a truck having primary propulsion mechanism, auxlliary wheel, and means for controlling the rota-' truck moving means including a reel, a reel driving shaft, drivingmeans for said reel driving shaft, a ratchet wheel carriedby said drum, a pawl carrier coaxial therewith and carrying pawls cooperating with said ratchet wheel, and a friction brake for controlling the rotation of said pawl carrier.

ating with said'ratchet wheel, and means for controlling the rotation of said pawl carrier.

11. In a truck mechanism, a truck frame, running gear therefor, propulsion mechanism for said running gear, a drum operatively connectible with said running gear for driving thereby; and means associated therewith operable to effect controllable braking of said truck when the'latter is running in one direction, but not during running in the reverse direction.

12. In combination, a support, a rotatable shaft'journaled thereon, means for effecting motion of translationof said support, driving means for saidshaft adapted for actuatlon by said first mentioned means, a winding member rotatable by said shaft, and

ratchet and pawl mechanism comprising ele-' ments rotatable relativeflto each other, one v ofsaid elements being operatively connected with one of said rotatable members, and friction means for holding the other stationary.

. 13. In combination, a'support, means for effecting translation of said support at a certain rate, and a'device operative to support said support on failure of said first mentioned means including a flexible connec-' tion, winding means associated therewith, and means cooperating wlth sa d winding means to shorten the flexible, connection substantially at the same rate as the rate of translation of said support, and friction con-' trolled ratchet means for preventing reverse rotation of said winding means.

14. In combination, a support, means for effecting translation of said support at a certain rate, and a device operative to support said support on failure of said first mentioned means including a flexible connection, winding means associated therewith, and means cooperating with said winding means and operated by said first mentioned means to shorten the'fiexible connection substantially at the same rate as the rate 'of translation of said support, and friction brake controlled ratchet means for prevent 'ing reverse rotation of said winding means.

In testimony whereof I aflix my signature.

MORRIS P. HoLMEs, 

